/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

using System;
using System.Runtime.Serialization;
using Nest.Utf8Json;

namespace Nest
{
	[InterfaceDataContract]
	[ReadAs(typeof(SpanNotQuery))]
	public interface ISpanNotQuery : ISpanSubQuery
	{
		[DataMember(Name ="dist")]
		int? Dist { get; set; }

		[DataMember(Name ="exclude")]
		ISpanQuery Exclude { get; set; }

		[DataMember(Name ="include")]
		ISpanQuery Include { get; set; }

		[DataMember(Name ="post")]
		int? Post { get; set; }

		[DataMember(Name ="pre")]
		int? Pre { get; set; }
	}

	public class SpanNotQuery : QueryBase, ISpanNotQuery
	{
		public int? Dist { get; set; }
		public ISpanQuery Exclude { get; set; }
		public ISpanQuery Include { get; set; }
		public int? Post { get; set; }
		public int? Pre { get; set; }
		protected override bool Conditionless => IsConditionless(this);

		internal override void InternalWrapInContainer(IQueryContainer c) => c.SpanNot = this;

		internal static bool IsConditionless(ISpanNotQuery q)
		{
			var exclude = q.Exclude as IQuery;
			var include = q.Include as IQuery;

			return exclude == null && include == null
				|| include == null && exclude.Conditionless
				|| exclude == null && include.Conditionless
				|| exclude != null && exclude.Conditionless && include != null && include.Conditionless;
		}
	}

	public class SpanNotQueryDescriptor<T>
		: QueryDescriptorBase<SpanNotQueryDescriptor<T>, ISpanNotQuery>
			, ISpanNotQuery where T : class
	{
		protected override bool Conditionless => SpanNotQuery.IsConditionless(this);
		int? ISpanNotQuery.Dist { get; set; }
		ISpanQuery ISpanNotQuery.Exclude { get; set; }
		ISpanQuery ISpanNotQuery.Include { get; set; }
		int? ISpanNotQuery.Post { get; set; }
		int? ISpanNotQuery.Pre { get; set; }

		public SpanNotQueryDescriptor<T> Include(Func<SpanQueryDescriptor<T>, ISpanQuery> selector) =>
			Assign(selector(new SpanQueryDescriptor<T>()), (a, v) => a.Include = v);

		public SpanNotQueryDescriptor<T> Exclude(Func<SpanQueryDescriptor<T>, ISpanQuery> selector) =>
			Assign(selector(new SpanQueryDescriptor<T>()), (a, v) => a.Exclude = v);

		public SpanNotQueryDescriptor<T> Pre(int? pre) => Assign(pre, (a, v) => a.Pre = v);

		public SpanNotQueryDescriptor<T> Post(int? post) => Assign(post, (a, v) => a.Post = v);

		public SpanNotQueryDescriptor<T> Dist(int? dist) => Assign(dist, (a, v) => a.Dist = v);
	}
}
